Mirantis Container Cloud (MCC) becomes part of Mirantis OpenStack for Kubernetes (MOSK)!

Starting with MOSK 25.2, the MOSK documentation set will cover all product layers, including MOSK management (formerly MCC). This means everything you need will be in one place. The separate MCC documentation site will be retired, so please update your bookmarks for continued easy access to the latest content.

Kafka¶

This section lists the alerts for Kafka.

KafkaClusterTargetDown
KafkaClusterTargetsOutage
KafkaInsufficientBrokers
KafkaMissingController

KafkaOfflinePartitionsDetected
KafkaTooManyControllers
KafkaUncleanLeaderElectionOccured
KafkaUnderReplicatedPartitions

KafkaClusterTargetDown¶

Since 23.3 to replace KafkaClusterTargetsOutage

Severity	Critical
Summary	Kafka cluster Prometheus target down.
Description	Prometheus fails to scrape metrics from the `{{ $labels.pod }}` Pod of the `{{ $labels.cluster }}` cluster on the `{{ $labels.node }}` node.

KafkaClusterTargetsOutage¶

Replaced with KafkaClusterTargetDown in 23.3

Severity	Critical
Summary	Kafka cluster Prometheus targets outage.
Description	Prometheus fails to scrape metrics from 2/3 of the `{{ $labels.cluster }}` cluster endpoints (more than 1/10 failed scrapes).

KafkaInsufficientBrokers¶

Severity	Critical
Summary	Kafka cluster has missing brokers.
Description	The `{{ $labels.cluster }}` Kafka cluster in the `{{ $labels.namespace }}` namespace has missing brokers.

KafkaMissingController¶

Severity	Critical
Summary	Kafka cluster controller is missing.
Description	The `{{ $labels.cluster }}` Kafka cluster in the `{{ $labels.namespace }}` namespace has no controllers.

KafkaOfflinePartitionsDetected¶

Severity	Critical
Summary	Unavailable partitions in Kafka cluster.
Description	Partitions without a primary replica have been detected in the `{{ $labels.cluster }}` Kafka cluster in the `{{ $labels.namespace }}` namespace.

KafkaTooManyControllers¶

Severity	Critical
Summary	Kafka cluster has too many controllers.
Description	The `{{ $labels.cluster }}` Kafka cluster in the `{{ $labels.namespace }}` in namespace has too many controllers.

KafkaUncleanLeaderElectionOccured¶

Severity	Major
Summary	Unclean Kafka broker was elected as cluster leader.
Description	A Kafka broker that has not finished the replication state has been elected as leader in `{{ $labels.cluster }}` within the `{{ $labels.namespace }}` namespace.

KafkaUnderReplicatedPartitions¶

Severity	Warning
Summary	Kafka cluster has underreplicated partitions.
Description	The topics in the `{{ $labels.cluster }}` Kafka cluster in the `{{ $labels.namespace }}` namespace have insufficient replica partitions.